The equation of the straight line passing through the point $(4,3)$ and making intercepts on the co-ordinate…

The equation of the straight line passing through the point $(4,3)$ and making intercepts on the co-ordinate axes whose sum is $-1$ is
  1. $\frac{x}{2}+\frac{y}{3}=-1$ and $\frac{x}{-2}+\frac{y}{1}=-1$
  2. $\frac{x}{2}-\frac{y}{3}=-1$ and $\frac{x}{-2}+\frac{y}{1}=-1$
  3. $\frac{x}{2}+\frac{y}{3}=1$ and $\frac{x}{2}+\frac{y}{1}=1$
  4. $\frac{x}{2}-\frac{y}{3}=1$ and $\frac{x}{-2}+\frac{y}{1}=1$

Solution

$\frac{x}{a}+\frac{y}{b}=1$ where $a+b=-1$ and $\frac{4}{a}+\frac{3}{b}=1$ $\Rightarrow a=2, b=-3$ or $a=-2, b=1$ Hence $\frac{x}{2}-\frac{y}{3}=1$ and $\frac{x}{-2}+\frac{y}{1}=1$

Asked in: JEE Main 2004

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